Shelford, Victor E. <br/><br/>
The ecology of North America. 

 - Urbana  University of Illinois Press  1963. 
 - xxii, 610 p.  illus., maps. 
<br/><br/>Bibliography: p. 495-531. 
<br/><br/><label>LCCN: </label>63007255 //r89 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology--North America.
<br/><br/><label>LC Class. No.: </label>QH102  / .S5 
<br/><br/><label>Dewey Class. No.: </label>574.5097